Extjs复习笔记（十八）-- TreePanel

Grid这一块暂时就讲到这。这一节开始就是tree的相关内容了。

[{    text: 'To Do',     cls: 'folder',    children: [{        text: 'Go jogging',        leaf: true,        checked: false    },{        text: 'Take a nap',        leaf: true,        checked: false    },{        text: 'Climb Everest',        leaf: true,        checked: false    }]},{    text: 'Grocery List',    cls: 'folder',    children: [{        text: 'Bananas',        leaf: true,        checked: false    },{        text: 'Milk',        leaf: true,        checked: false    },{        text: 'Cereal',        leaf: true,        checked: false    },{        text: 'Energy foods',        cls: 'folder',        children: [{            text: 'Coffee',            leaf: true,            checked: false        },{            text: 'Red Bull',            leaf: true,            checked: false        }]    }]},{    text: 'Remodel Project',     cls: 'folder',    children: [{        text: 'Finish the budget',        leaf: true,        checked: false    },{        text: 'Call contractors',        leaf: true,        checked: false    },{        text: 'Choose design',        leaf: true,        checked: false    }]}]